12180065586 has 48 divisors (see below), whose sum is σ = 26553153600. Its totient is φ = 3722846400.

The previous prime is 12180065581. The next prime is 12180065591. The reversal of 12180065586 is 68556008121.

It is an interprime number because it is at equal distance from previous prime (12180065581) and next prime (12180065591).

It is not an unprimeable number, because it can be changed into a prime (12180065581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113340 + ... + 192888.

It is an arithmetic number, because the mean of its divisors is an integer number (553190700).

Almost surely, 2^12180065586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12180065586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13276576800).

12180065586 is an abundant number, since it is smaller than the sum of its proper divisors (14373088014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12180065586 is a wasteful number, since it uses less digits than its factorization.

12180065586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79731 (or 79718 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 12180065586 in words is "twelve billion, one hundred eighty million, sixty-five thousand, five hundred eighty-six".